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(No Model.) I

W. H. DAILEY.

WIRE NAIL MACHINE.

Patented June 11, 1895.

351 72115 Gu ana,

81mm F2721 amjcpaz' Zey 'NITED STATES ATENT Fr es.

WILLIAM H. DAILEY, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-H ALF TO DAVID SANGUINETTE, OF SAME PLACE.

WIRE-NAIL MACHINE.

SPECIFICATION forming part of IiettersIatent No. 540,904, dated June 11, 1895.

Application filed March 20, 1895. I

arrangement and combination 'of parts more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 isa plan view of a nail-machine with my improved attachment carried thereby. Fig. 2 is an.enlarged side view of the switch-arm. Fig. 3 is a section on amof Fig. 2. Fig. 4 is a section on y y of Fig. 2. Fig. 5 is an inner end view of the central block forming a part of the revolving trigger to be hereinafter referred to. Fig. .6. is a side view of the free end of the curved portion of the switch-arm, and Fig.7 is an end view of the guide-yoke for the wires fed to the machine.

The present invention is an improvement on the mechanism described in my pending application, Serial No.438,47 7, filed February 15, 1895, and has for its object the construction of a wire nail machine operating on two wires or a double wire, whichwill come to a full stop when one or the other of the wire lengths fed to the machine'is exhausted from the reel supplying the same, or when kinks or knots in one wire or the other prevent the feeding of the said wire to the machine.

In detail the improvement may be described as follows:

Referring to the drawings, 1 represents the bed plate of the machine; 2, the main driving shaft; 3, the fast pulley; 4, the loose pulley, and the fly wheel.- At a suitable distance from the axis of the fly wheel is'pivotally secured one end-of a pitman 6 whose opposite endis pivotally carried by the outer projecting arm 7 of the feed plate 8, provided with parallel guide arms 9, the said plate and arms being reciprocated within the bearings 10 of the guide arms. The feed plate carries the adjustable feed bar 11 co-operating with main drive shaft.

the lever 26. arm of the lever 26 presses inwardly the free Serial No. 542,441; on model.)

'a post 12 made adjustable by a bolt 13 within or along the plate, between which feed bar and post the wires 14: are fed. As the wires are advanced by the .reciprocating feed bar they are fed between the movable jaws 15 and 16,each jaw being secured to one end of its respective gripping lever 17 and 18 oscillated by the cams 19 and 20 secured to the The shaft 2 also carries an arm 2l.operatingin its sweep against the forward surface of. an opening 22 for purposes of throwing back the plunger or hammer 23 reciprocating within the guides or bearings 24, said plunger being forced or operated in a reverse direction by a spring 25 at a proper moment for forming the heads on the nails before the latter have actuallybeen cut into predetermined lengths by the gripper and cutter. The foregoing parts are all well known both in'general construction and operation and need no detail description, and form no part ofv my present invention.

Along that side of the bed plate which is adjacent to the driving pulley is pivoted a lefver 26 whose long arm carries at its end an outwardly forked belt shifter 27 pivoted to Against the side of the short end of a spring arm 28,thenatura1 tendency thereof being to throw the free end of the long arm outwardly and thus shift the belt from the fast pulley to the loose pulley.

The lever 26 is not a straight arm but adjacent to its pivotal point 29 is bent upward resulting in a short vertical member or elbow 30 from which the long member then extends horizontally, this arrangement being effected so as to raise the free end of the long arm sufficiently to escape the fixed pulley when the belt is shifted to the loose pulley as seen in dotted lines in Fig. 1.

opposite ends are loosely embraced by the members 32 of theforked end of a switch arm '33, the lower surface of whose opposite free end is curved upwardly that it may freely. enter between the superposed wires 14 coming from the supply reels. (Not shown.) The free end of a resilient plate 3 L keeps the switch arm in proper position along the face of the bed plate 1. In the free end of the The free end of the short arm of the lever 26 carries a pin 31 whose switch arm 33 and between the wires 14 is mounted ahorizontal pivotal shaft 35 one end of which carries a block 36 from the opposite faces of which project spindles 37, each having a head 38 over which spindles revolve the anti-friction rollers 39. That face of the block contacting with the side of the switch arm is provided with right angular diverging ribs or ridges 40 adapted to engage with or ride over, during the rotation of the block, correspondiugly radiating depressions 41 formed in the side of the switch arm. The opposite end of the shaft 35 carries a nut 42 between which and the adjacent face of the switch arm is confined a coiled spring 44 whose resilient action draws the block 36 toward the switch arm thus causing the ridges 40 to constantly engage the depressions 41,.andyet the spring is sufficiently yielding to allowthe block to revolve about the shaft.

For the sake of convenience we will denominate the revolving block with its spindles and antifrietion rollers as the trigger, and the spindles with their anti-friction rollers as the arms of the trigger. Under normalconditions, as the wires 14 are fed from the reels through the guide rollers 45, both arms of the trigger bear against the two wires simultaneously, the said wires being always taut. as they come from the reels and pass through the machine. This position of the trigger is shown in Fig. 2, it being understood that the pressure of the trigger against the two wires is effected by the action of the spring arm 28 bearing against the side of the short arm of the lever 26 to the end of which the switch arm is pivoted. It is apparent that the moment the supply of wire from one or the other of the reels is exhausted, thus leaving but one wire to resist the lateral' pressure exerted against the trigger,.the latter being revoluble about its axis or shaft will be turned by the remaining wire engaging therewith to the dotted position shown in Fig. 2, the spring arm 28 under those circumstances throwing the switch arm tothe position shown in dotted lines in Fig. 1, and at the same time the free end of the long arm of the lever 26 will be thrown outwardly thus causing the belt shifter to throw the belt from the fast to the loose pulley as seen in dottedlines in Fig. 1, when the machine will come to rest.

The object of the ridges 40 and depressions 41 is to prevent the trigger from spinning around after its disengagement from the exhausted wire,the resilient actionof the spring 44 drawing the trigger toward or into said depressions and permitting it to remain in the dotted position shown in Fig.2, until again properly set by the operator.

Again, let us suppose that kinks or knots are foundin the wire. Within suitable guide bearings 46 of the bed plate 1, is adapted to reciprocate a bar 47 whose inner end carries a wedge shaped block 48 adapted to pass under the switch arm 33. The bar is. held to its normal position by the resilient action of a coiled spring 49 coiled about the bar and 1m ing its ends interposed respectively between one of the bearings 46 and a pin 50 carried by the bar. The tendency of this spring is to throw the bar outwardly. The outer end of the baris curved laterallyas shown in Fig. 1', said curved end having secured thereto a guide yoke 51 one of whose ends carriesa fork 52 between the members of which is adapted to pass and rest the weighted projecting arm 53 pivoted at the opposite end of the yoke. To insert the wires through the yoke initially the arm 53 is raised to the dotted position shown in Fig. 7, when it is let down to its normal position as shown in full lines in said figure. The yoke and arm thus serve as a guide for the wires as they pass from their respective reels into the. machine. Now, if in or during the feeding of the wires, the guide yoke and armencounter any kinks or knots in the wires, the said kinks will necessarily carry the yoke with them in the same direction, thus shoving the bar 47 forward against the resiliency of thespring 49 and forcing the wedge 48 under the vertically yielding switch arm 33 and raising the free end of the latter sufficiently to disengage the lower arm of thetrigger from its wire, permitting thesecond wire to revolve the trigger to the dotted position indicated in Fig. 2, when as in the previous case the belt will be shifted from its pulley and the machine will come to astop.

It is apparent from. the foregoing that the present machine is thus applicable to machines feeding two wires. In its vertical displacement by the wedge 48, the switch arm 33 has its free end guided by a pin 54. (See Fig. 1.)

Having described my invention, what I claim is- 1. In a wire nail machine, a suitable driving shaft, suitable driving mechanism for said shaft, devices for feeding simultaneously two adjacent lengths of wire to the machine, and means interposed. in the path of the wires and co-operating with the driving mechanism for disengaging the latter from the driving shaft upon a termination of either length of wire or kinking of the same during the feeding operation, substantially as set forth.

2. In a wire nail machine, a suitable driving shaft, fast and loose pulleys for said shaft, a switch arm, a revoluble trigger carried by said arm bearing simultaneously against the wires fed to the machine, and suitable belt shifting mechanism between the switch arm and pulleys for operating and shifting the belt upon a termination of the wire supply or disengagement of the wire from the revolnble trigger, substantially as set forth.

3. In a wire nail machine adapted to feed two parallel lengths of wire simultaneously, a suitable switch arm, a revoluble trigger carried by the free end thereof, arms for said trigger, the said arms being normally in contact with both lengths ofwire, and means for shifting the switch arm upon the disengageinent of either wire from its respective trigger arm, substantially as set forth.

4. In a wire nail machine, a suitable switch arm, a trigger carried by\the same, said trigger being composed of a suitable block, a shaft for said block, oppositely extending spindles on said block, anti-friction rollers for said spindles, and means for retaining .the shaft on the switch arm, substantially as set forth.

5. In a wire nail machine, a suitable trigger having a revolving block, a series of ridges or projections on one of the faces thereof, a shaft projecting from the face carrrying the ridges a suitable switch arm supporting said WILLIAM H. DAILEY. Witnesses: j H. A. UHL,

E. STAREK. 

